There are several types of fees on Airbnb specifically:
-Airbnb service fee, cleaning fee, extra guest fee, pet fee, security deposit, VAT (if applicable), and local taxes.
There are also 2 different types of fee structures - a split fee and a Host-only fee.
1. Split-fee: most common and split between the Host and guest.
Host fee= 3%, but some pay more depending on the location of rental. It's calculated from the booking subtotal but excludes the guest service fee and taxes but is automatically deducted from Host payout. For any cross-currency bookings, the guest service fee will include additional charges which could be as high as 16.5%.
2. Host-only fee - the entire fee is deducted from Host payout (~14-16%). Depending on the booking VAT fees may also be applicable.
Take a look at the screenshot below as an example to help you better understand, this is a listing in CT.
If you are worried about fees and occupancy rates, I would suggest flipping back and forth between traveling nurses. There's a great site called Furnished Finders.
Hope this helps!!